X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mesh_mspgl%2Fexport_mspgl.py;fp=blender%2Fio_mesh_mspgl%2Fexport_mspgl.py;h=f888dc4528d9981250e9b6ea950d35244ac7b4ee;hb=7af1f6d70e6ef191991ac909aa134b88d7bdb826;hp=1046630ba088d1bc8ec191448249c6e7881e9fd6;hpb=b68ac997058037ed809560babb3d25d62ff4f910;p=libs%2Fgl.git

diff --git a/blender/io_mesh_mspgl/export_mspgl.py b/blender/io_mesh_mspgl/export_mspgl.py
index 1046630b..f888dc45 100644
--- a/blender/io_mesh_mspgl/export_mspgl.py
+++ b/blender/io_mesh_mspgl/export_mspgl.py
@@ -249,23 +249,28 @@ class Exporter:
 
 		texunits = []
 		if mesh.uv_layers and self.export_uv!="NONE":
+			# Figure out which UV layers to export
 			if self.export_uv=="UNIT0":
-				texunits = [0]
+				if mesh.uv_layers[0].unit==0:
+					texunits = [0]
 			else:
-				texunits = list(range(len(mesh.uv_layers)))
+				texunits = range(len(mesh.uv_layers))
+			texunits = [(i, mesh.uv_layers[i]) for i in texunits]
+			texunits = [u for u in texunits if not u[1].hidden]
 
-			tbn_unit = 0
 			if self.tbn_vecs:
-				uvtex_names = [u.name for u in mesh.uv_layers]
-				if self.tbn_uvtex in uvtex_names:
-					tbn_unit = uvtex_names.index(uvtex)
-					del texunits[tbn_unit]
-					texunits.insert(0, tbn_unit)
-
-			for i in texunits:
+				# TBN coordinates must be generated before vertices are split by any other layer
+				uv_names = [u.name for i, u in texunits]
+				if self.tbn_uvtex in uv_names:
+					tbn_index = uv_names.index(self.tbn_uvtex)
+					unit = texunits[tbn_index]
+					del texunits[tbn_index]
+					texunits.insert(0, unit)
+
+			for i, u in texunits:
 				progress.set_task("Splitting UVs", 0.35+0.3*i/len(texunits), 0.35+0.3*(i+1)/len(texunits))
 				mesh.split_uv(i, progress)
-				if self.tbn_vecs and i==tbn_unit:
+				if self.tbn_vecs and u.name==self.tbn_uvtex:
 					mesh.compute_uv()
 					mesh.compute_tbn(i)
 
@@ -285,27 +290,29 @@ class Exporter:
 
 		fmt = "NORMAL3"
 		if texunits:
-			fmt += "_TEXCOORD2"
-			for i in texunits[1:]:
-				fmt += "_TEXCOORD2%d"%i
+			for i, u in texunits:
+				if u.unit==0:
+					fmt += "_TEXCOORD2"
+				else:
+					fmt += "_TEXCOORD2%d"%u.unit
 			if self.tbn_vecs:
 				fmt += "_ATTRIB33_ATTRIB34"
 		fmt += "_VERTEX3"
 		out_file.begin("vertices", fmt)
 		normal = None
-		uvs = [None]*len(mesh.uv_layers)
+		uvs = [None]*len(texunits)
 		tan = None
 		bino = None
 		for v in mesh.vertices:
 			if v.normal!=normal:
 				out_file.write("normal3", *v.normal)
 				normal = v.normal
-			for i in texunits:
+			for i, u in texunits:
 				if v.uvs[i]!=uvs[i]:
-					if i==0:
+					if u.unit==0:
 						out_file.write("texcoord2", *v.uvs[i])
 					else:
-						out_file.write("multitexcoord2", i, *v.uvs[i])
+						out_file.write("multitexcoord2", u.unit, *v.uvs[i])
 					uvs[i] = v.uvs[i]
 			if v.tan!=tan:
 				out_file.write("attrib3", 3, *v.tan)
@@ -350,7 +357,11 @@ class Exporter:
 					out_file.begin("material")
 					out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
 					out_file.end()
-					out_file.begin("texunit", 0)
+					index = 0
+					for u in mesh.uv_layers:
+						if u.name=="material_tex":
+							index = u.unit
+					out_file.begin("texunit", index)
 					out_file.begin("texture2d")
 					out_file.write("min_filter", "NEAREST")
 					out_file.write("mag_filter", "NEAREST")